JBMO 2017 Problem 3
- Paper
Let be an acute triangle such that , with circumcircle and circumcenter . Let be the midpoint of and be a point on such that . Let be a point such that is a parallelogram and a point on the same side of as such that
Let the line intersect at and let the circumcircle of intersect at point . Prove that the points , and are collinear.
Dataset text NuminaMath olympiads. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.